This was seriously the moistest pot roast I have ever made...and probably least healthy. It was good though!
Roast (mine was about 2.5 lbs)
1 can of Roasted Garlic Cream of Mushroom Soup
1 pkg of Lipton's Beefy Onion Soup Mix
1.5 to 2 cups of water
Combine the last five ingredients in the slow cooker and mix until well combined. Place your roast in and cook on low. I cooked mine while I was at work...about 11 hours, but it does not have to cook that long. If you want to use the juice as a gravy you can coat the roast in flour before you place it in the slow cooker and that will help make the juice more like a gravy.